Flag of Greater Manchester County Council
This is the flag of the former Greater Manchester County Council. It is composed of a dark blue background with the coat of arms of the Greater Manchester County Council in the centre.
I'm not sure what the protocol was for the flag, i.e. where precisely it was flown. Quite simillar flags with a variant of the coat of arms are still flown outside of the stations and headquarters of the Greater Manchester Fire and Rescue Service. Using other county and metropolitan district councils that exist to this day as a guide, I imagine this flag was flown from the council's HQ (in this case, Westminster House in central Manchester), or (more likely in this case) kept in the council chambers. It may have been flown from the council leaders' official car.